WHTIEMAN AIR FORCE BASE, Mo. - April is Sexual Assault Awareness Month. The 2011 national SAAM observance focuses on a bystander approach to sexual violence prevention. A bystander, or witness, is anyone who sees a situation but may or may not know what to do, may think others will act or may be afraid to do something. Bystanders who take action when necessary can prevent sexual assault. (U.S. Air Force graphic by Jeff Gates)